Depositing machine for dough, semifluid, pasty, or like materials



May '10, 1932. R. M. CHAMBERS 1,857,622 DEPOSITING MACHINE FOR DOUGH SEMIFLUID, PASTY, OR LIKE MATERIALS Original Filed Feb. 7, 1931 5 Sheets-Sheet 1 R m m V N n O E l Q N U ml l l urn I I I V nhfl lfldu m l l l l n 1| II J n u m m m m n n H m m m m w m m M w m m: m m x n m i m m S H a n H aw Q i m w May 10, 19132. M, CHAMBERS DEPOSITING MACHINE FOR DOUGH, SEMIFLUID, PASTY, OR LIKE MATERIALS Original Filed Feb. '7, 1931 5 Sheets-sheet '2 May 10, 1932- R. M. CHAMBERS 1,857,622

7 DEPOSITING MACHINE FOR DOUGH, SEMIFLUID, PASTY, OR LIKE MATERIALS Original Filed Feb. '7, 1931 5 Sheets-Sheet 3 Patented May 10,1932

UNITED STATES PATENT OFFICE. 3

ROBERT MARTIN CHAMBERS, or FINAGHY, RELrAsT, IRELAND, ssIsNoR To eEoReE MARTIN AND TERESA MARTIN, BOTH F BELFAST, IRELAND DEI'OSITING MAoIIINE FOR DOUGH, sEMIr-L'om, PA'sTY, 0R LIKE Iv A'rERIAI-s Original application filed February 7, 1931, Serial No. 514,244, and. in. Great Britain Mai-ch 26,1930; 1

Divided and this application filed July 15, 1931. Serial No. 551,186.

This invention relates to machines for depositing semi-fluid or pasty material or materials such as dough and other bakingmixtures from a bulk supply thereof this case being a division of my prior case, Serial No. 514,244 filed February 7 1931. The machine, as in my prior case, is of the class which comprises a trough or hopper from which the material to be deposited is discharged by means of reciprocating plungers through one or more'cylinders or openings controlled by valves.

According to the present invention, a machine for depositing quantities of plastic or like material. from a bulk supply thereof is provided in which the actuating meansfor the plungers or ejectors comprises a multiple part cam device and means for adjusting the parts of the said cam so'thatthe an interval between dwell periods provided by the cam in the motion of theplungers can be varied. i

Preferably, the multiple part cam comprises two portions having part of thecontour thereof concentric relatively to the cam I axis, and part eccentric, the two cam portions being adjustable angularly. Means may be provided whereby large or rough ad ustments of the cam parts can be eflected quickly, whilst small or final adjustments of the cam portions can be eifected by means allow ing greater accuracy in the relative positioning thereof.

The invention will now be described, by way of example, with reference to a hand driven machine shown in the annexed drawings, in which,

F i 1 is a side elevation, partly in section, of a hand operated depositing machine, in accordance with theinvention;

Fig. 2 is an end elevation of the machine looking in the direction of the arrow A, Fig. 1;

' Fig. 3 is a plan view of the machine;

Fig. 4 is a detail view of the two-part cam which controls the movements of the plungers; V e

Fig. 5 is a cross-sectional view of the cam 13, 14, taken on the line 55, Fig. 4; 5 Figs. 6 and 7 are respectively sectional 13-14, described with elevation and plan views of'the means for adjusting the movable part 13 of the cam referenceto Figs. 1 04. u

Referring to the drawings The machine shown comprisesa hopperl for containing the material to be deposited,

and fitted on bottom of same are cylinders 3,

the tops; of which open into the bottom ofvthe hopper 1., The casting 2 provides sup} ports for flanged wheels 4' on which the whole machine is supported,.the wheels. 4 running on the edge of thehot plate 5 or other surface on which the material from the machine is to be deposited. The pistons 6 are connected to atop moving beam. 7 in each end of which is a guide bar 8 working in guides 9 in brackets 10 attached to the castingwhich contains the cylinders. The guide bars .8-

have racks 8 cut on them and these-racks'are engaged by pinions 11, keyed or "otherwise attached to a cross shaft 12 and imparting an equal motion to each end of the beam 7.; The racks 8 are operated by a two part cam formed'by the parts 13 and 14 and centered at 14*, the interengagement of the parts 13,14 so as to be angularlyadjustable in relation to each other being shown in the sectional view,

Fig. 5. The cam 13-14(acts on a roller 15 fixed tothe rack 8 at one end of the machine. The part 13 of thetwo-piece cam is centered at 13 so that for adjustment purposes the part 13 can 'berotatedround the centre 13 in order to reduce orincrease the length of the'acting cam surface and, correspondingly,

the length of the stroke of the racks 8 The working surface of the cam portion 14 between the points x and y moves the racks 8 and through. them, the pistons 6 downward till they assume the position indicated by the dotted lines at 6 Thepart of the cambetween y and 2 is'struck from the centre 14; therefore when this part is passing theroller 15the racks 8 and the pistons 6 will "be stationary. On the movable portion,i. e. the outside portion, .13 of the cam 1314, the

working face between the points z and m isan arc of a circle centred at 13? in the part 14 of the cam, the part'between the point e and the point a: being struck from the centre 14 Fig. 1 to the open position shown in dotted lines at 17 F igl 1, and bringing the'pin 17 Q to the position now occupied by the pin 17 .v

The bent arm lever 18 centred at 14 has its limb 18 (Fig. 2) terminating in a boss 18 into which is tightly driven a rod 18, the latter being slidable through a hole formed diametrically through the head of a pin 18 turnable in a hole in the part 13 of the cam 1314. On the other end of the lever 18 and extended beyond the centre 14 is apawl 19. This pawl is arranged to engage the pin 17 c as the cam-1314 moves around its centre 14 when the point 41 on the cam surface engages the roller 15, so that the onward movement of the cam 13-14 does not move I the racks 8, but only the pin 17 is moved 5 round to theposition now occupied at 17 and thereby again closing the valve. On the upward stroke of the cam, the camface 14 engages the roller 15 and restores the racks 8 to the starting position, the point 9 serving to hold the roller in position at the top of the stroke. On the return stroke, or up stroke of the cam, the pawls 16 and 19 pass the pin owing to their being under the action of springs in known manner. The two parts 13 and 14 of the-cam 1314 are held in relative position to each other by means of a pin 20 with a suitable crank on its end. The action of this pin is as follows The two parts 13 and 14 of the cam 1314 are adj usted' relative to each other by means vshown in Figs. 6 and 7 and comprising a small crank 22 engaging slots 21 in the portion 14 of the cam. The crank 22 is held in position inthe slots by means of a spring, and a knob 23 is provided on the top of the crank spindle, for turning same. Fine adjustment of the cam portions 13 and 14 is obtained by turning the knob 23 and the crank pin is held in any position by means of a series of holes 24 provided in a plate 24 below the knob 23,

said holes engaginga pin 25 in the cam portion 13. Quick adjustment of the cam portion 13 is obtained by pulling the'knob 23 outwards, thus lifting the crank 22 clear of theslots against the action of a spring. The cam portions 13 and 14 can then be moved relatively to each other.

A peep hole 26 is provided in the movable portion 13 of the cam 13 14 through which a number, corresponding to each of the slots 21, is visible. Letters or other indications are stamped on the upper face of the knob 23 to-correspond with the various holes in the bottom of the plate 24. These numbers are used to give an indication of the setting required for each size of deposit.

The valves 17 are shown as revolving cylin ders forming stop cocks below each working cylinder 3 and, through which the material is dischargedby the piston or plunger 6 oper-. ated by the bridge bar7. as hereinbefore described.

The arrangement described is such that the amount of active cam surface between the before mentioned dead. portions of the cam can be varied and the stroke of the plungers thereby varied to suit the requirements. The

a dead point or dwell isprovided for,

which causes the plungers 6 to remain stationary whilst the trip action described operates to close the 'valve117. The operating handle 18 is then returned to its original position and the sequence of operations repeated for the next deposit action. The distance between the two dead points or dwells on the twoportions of the cam can be'regulated by causing the one portion 13 to be moved relatively to the other portion 14, to bring the two dead portions or dwells nearer to each other, or farther from each other as required.

' It will beunderstood that the, invention is applicable to machines for depositing or ejecting quantities .of'any viscuous, liquid,

granular or other substance, such as cake mixtures, jam or flour, and any other substances capable of flowing'from a bulksupply into individual ejector vessels or cylinders, all

such substances being hereinafter referred to, for convenience, as plastic materials.

I claim 1. A machine for depositing quantities of 7 plastic material from a'bulk supply thereof,

valve means 'for'controlling the discharge of said quantities from said" containers, actu- .atmg means for said valve means, cam means operatively connected "with said ejectors, operating -means whereby for a. uniform movement of said cam means an intermittent a motion is imparted to said ejeotors such that during the operation of said valve means dwell. periods are provided in whichthe ejectors are stationary, and means forv adjusting said cam means so as to vary the interval between said dwell periods.

2. A machine for depositing quantities of plastic material from a bulk supply thereof, comprising a trough for said bulk supply, a plurality of cylinders communicating with said troughs, plungers for ejecting material entering said cylinders from said trough, valve means for controlling the discharge of said quantities from said cylinders, actuating means for said valve means, a multiple part cam device having a contour partly in concentric and partly eccentric with the axis thereof, an operating element adapted to operate said cam, transmission means between said cam and plungers whereby for a uniform movement of the cam an intermittent motion is imparted to said plungers such that during the operation of said valve means dwell periods are provided in which the plungers are'stationary, and means for adjusting the parts of said multiple part cam so as to vary the interval between said dwell periods.

3. A machine for depositing quantities of plastic material from a bulk supply thereof,

comprisinga trough for said bulk supply,

a plurality of cylinders communicating with said trough, plungers for ejecting material entering said cylinders from said trough, valve means for controlling the discharge of said quantities from said cylinder, actuating means for said ,valve'means, a main cam elementhaving a contour partly concentric and partly eccentric with the axis thereof, a supplementary cam element having a contour partly concentric and partly eccentric with the axis-of said main cam element, transmission means between said cam elements and plungers whereby for a uniform turning movement of said cam elements an intermitentering said cylinders from said trough,

valve means for controlling the discharge of said quantities from said cylinder, actuating means for said valve means, a main cam element having a contour partly concentric and partly eccentric with the axis thereof, a supplementary cam element having a contour partly concentric and partly eccentric with the axis of said main cam element, transmission means between said cam elements and plungers whereby for a uniform turning movement of said cam elements an intermite tent motion is imparted to said plungers such that during the operation of said valve means dwell periods corresponding to the concentric V contour portions of said cam elements are provided in which the plungers are stationary, means whereby said main cam element and said supplementary cam element aredirectly slidable over each other so as to effect rough adjustment of the interval between said dwell periods, and crank means for eifecting exact adjustment of said main cam element and supplementary cam element. r

5. A machine for depositing quantities of plastic material from a bulk supply thereof comprising a trough for said bulk supply, a plurality of cylinders communicating with said troughs, plungers for ejecting material entering said cylinders from said trough,

valve means for controlling the discharge of 1 said quantities from said cylinders, inter-connectmg means whereby said plungers are movable in unison, actuating means for said valve means, a two-part cam device having a contour partly concentric and partly eccentric with the axis thereof, an operating handle adapted to turn said cam device about its axis, transmission means between said cam depart cam device so as to vary the interval between said dwell periods, and a wheeled support whereby said machine is movable as awhole. In testimony whereof I aflix my signature. ROBERT MARTIN CHAMBERS. 

